Just add water to generate eluent

Dionex ion chromatography products continue to be innovative and incorporate an expanding set of capabilities to increase the power of ion analysis. Advances in eluent generation and electrolytic suppression technologies are enabling a wider variety of applications and increased productivity. Our reagent-free IC (RFIC) systems with eluent generation (RFIC-EG) combine automated eluent generators and electrolytically regenerated suppressors to electrolytically create the required eluents and regenerants used for IC applications. Plumb in a clean source of deionized water, and the RFIC-EG system takes care of the rest. See below to learn more.

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What is RFIC-EG?

Systems with reagent-free IC eluent generation (RFIC-EG) automatically generate high-purity hydroxide, carbonate, bicarbonate, or methanesulfonic acid (MSA) eluents electrolytically using Dionex EGC Eluent Generation Cartridges. All that’s needed on an RFIC-EG system is a high-purity source of deionized water. The system will automatically generate eluent at the concentration you indicate for use in isocratic or gradient methods. Interestingly, this means that gradient analyses can be accomplished using an isocratic pump. Eluent is purified inline using the Dionex CR-TC Continuously Regenerated Trap Column, and suppressed electrolytically before detection without the need to prepare regenerants.

How does RFIC-EG work?

Inside the Dionex EGC III KOH Eluent Generator cartridge

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The Dionex EGC III KOH Eluent Generator Cartridge consists of a KOH generation chamber and a K+ electrolyte reservoir connected by a cation exchange connector. A high-pressure connector permits the passage of K+ ions from the K+ electrolyte reservoir into the electrolytic chamber.

RFIC-EG system schematic

With a Dionex EGC Cartridge installed, just add water to electrolytically produce high-purity hydroxide, carbonate, or methanesulfonic acid eluents for isocratic and gradient runs. Eluents are purified online using the Dionex CR-TC Continuously Regenerated Trap Columns. This line of trap columns removes contaminants, thereby eliminating trace ionic impurities, such as carbonate, from the eluent stream. The traps eliminate the need for off-line cleanup procedures. The Dionex CR-ATC and Dionex CR-CTC trap columns are for removing anionic and cationic contaminants, respectively. Eluents are suppressed electrolytically just prior to detection, thereby eliminating the need to prepare regenerants.

Thermo Fisher Scientific

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